favorite_languages = {
	"jackie": 'python',
	"lucy": 'c',
	"zhangsan": 'java',
	'lisi': 'go'
}

friends = ['zhangsan', 'lisi']
for person, language in favorite_languages.items():
	if person in friends:
		print(f"感谢{person}, 你参加了 {language.title()}")
	else:
		print(f"邀请{person}参加")

pizza = {
	'crust': 'think',
	'toppings': ['mushrooms', 'extra cheese']
}

print(f"You ordered a {pizza['crust']}-crust pizza "
	"with the following toppings:")
for topping in pizza['toppings']:
	print(f"\t{topping}")